Portaflow 220 User Manual i
(Issue 1.0)
Table of Contents
1: General Description 1
1.1 Introduction 1
1.2 Principles of Operation 2
1.3 Supplied Hardware 3
1.4 Portaflow 220 Instrument 4
1.4.1 Connectors 4
1.4.2 Keypad 5
1.4.3 Power supply and battery charging 6
1.5 Transducers 6
2: Installation 7
2.1 Transducer Positioning 7
2.2 Transducer Attachment 8
2.2.1 Preparation 8
2.2.2 Attaching the guide rails 8
2.2.3 Fitting the transducers 9
3: Operating Procedures 11
3.1 Setting-up the Instrument 12
3.1.1 Using the instrument for the first time 12
3.1.2 Enabling/disabling the backlight 13
3.2 Using the Quick Start Menu 13
3.3 Using the System at a Regularly Monitored Location 16
3.4 Managing Named Sites 17
3.4.1 Setting up a new site 18
3.4.2 Changing a site name 18
3.5 Instrument Calibration 19
3.5.1 Adjusting the zero cut-off 19
3.5.2 Adjusting the set zero flow offset 19
3.5.3 Adjusting the calibration factor 20
3.5.4 Adjusting the roughness factor 20
3.5.5 Adjusting the damping factor 21
3.6 Performing Monitoring Functions 22
3.6.1 How to measure totalised flows (manually) 22
3.7 Configuring the Portaflow 220 Interfaces 23
3.7.1 How to turn the 4-20mA output OFF/ON 23
3.7.2 4-20mA signal calibration and ranging 23
3.7.3 How to convert the measured current to flow rate 24
3.7.4 How to turn the pulse output OFF/ON 25
3.7.5 Pulse output signal calibration 25
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